Transmission-gear for aeroplanes.



H. A. ORME.

TRANSMISSION GEAR FOR AEROPLANES. APPLICATION IILEDJULY15, 1911 1 1 13,044. Patented 001;. 6, 1914.

UNITED STATES Parana OFFIGE.

HARRY A. OR-ME, OF WESLEY HEIGHTS, DISTRICT OF COLUMBIA;

TRANSMISSION-GEAR FOR AEILQPLANES.

. the object being to provide a simple and durable form of transmissionwhich will avoid the crossing of chains, and another object is toprovide a form of transmission.

which will relieve the power shaft of all lateral strain and a stillfurther object of the invention is to provide for a truss or bracebetween the power shafts and propeller shafts.

With these objects in view my invention consists in the novelfeaturesvof construction hereinafter fully described and pointed outinthe claim.

In the drawings forming a part of this specification: Figure 1 is a rearview of a portion of an aeroplane embody ng my improved construction oftransmission, and, Fig. 2 is a top plan view of the same.

Referring to the drawings, A, indicates the upper plane and B, the lowerplape, and C, are the wooden brace rods connecting the upper and lowerplanes.

' I), indicates the motor which may be of any desired construction andfrom which extends the main drive shaft E, carrying apinion F, whichmeshes with a pinion G, mounted upon the rear end of a shaft H, which ismounted in suitable bearings upon the side of the motor.

Specification of Letters Patent. Application filed July 15, 1911. SerialNo. 638,699.

Patented Oct. 5, in l d.

I*, and K, respectively, held betwerz. trussed brace rods K, which. areconiwwl to theupper and lower planes as sh The sprocket chains travel intubes L, o,

M, said tubes serving to inc-ase or envelop the chains and therebypreventing anything coming in contact therewith. In order to take thestrain oft'the power shafts and also to brace .the propeller shafts inconnection with said power shafts, I employ truss rods N, and O, thetruss rod N, extending from the braces K, upon the left hand side to theout} of the rotary shaft H, and the truss rod 0, extends from the.trussed brace K upon the right hand side of the machine to the end ofthe shaft H, and turn-buckles N,

tension and in addition to these features, I employ a link P, whichextends from the rear end of the power shaft E, to the end-0f the shaftH. said link serving to hold these two shafts properly spaced andprevent any strain being communicated thereto.

Most of the motors now in use are what machine is a left hand drive andit will he K said shafts being journaled in how s E are supported bymeans of suitable brute-s are known as right hand motors but this and O,are employed to secure the proper noted that by the employment of this'particular form of transmission I completely avoid the crossing of thechains and furthermore the brace rods of the parts :{t various pointscan relieve the main drive and supplemental. drive shafts of all lateralstrain.

It will thus be seen that I provide a simple and eilicient form oftransmission capable of carrying out all of the objects hereinbcforereferred to. l i

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is:

In an aeroplane, the combination with the propeller shafts, of verticalsupporting power shaft having a gear thereon, a second shaft paralleltherewith and provided also sprockets carried by the-power and secondshaft and also by the propeller shafts,

braces to which said shafts are connected, a y

with a gear, said gears intermeshing,'

sprocket chains passing around said I site support for a propellenhaft,all of said sprockets, a link connecting the ends of the parts ,l'uingcmnbincd and arranged subpower and second shaft, an adjustable truss 5stuntiully as 1'1e1'e'11.1-si1w'11 and described. 1!?

rod extending from the endof the second HARRY A; ORME. shaft to thesupport for a propeller shaft. \Vitnesses:

and a secpnd adjustable truss' rod extending CHAS. F1. BnocK,

from the end of the second shaft to the oppo- PERCY H. Moon

